AVE6327859: 1950s: Young man speaks from seat in college classroom / Bridgeman Images

AVE6327874: 1950s: Young woman sits down in audience / Bridgeman Images

AVE6327880: America, c.1990s: Robotic arm controller assist astronaut on STS-49 mission in installing capture bar on rotating satellite / Bridgeman Images

AVE6327883: 1960s: Woman attaches car seat belt / Bridgeman Images

AVE6327892: America, c.1990s: Medium close up: Astronaut in space receives telecom instruction while installing capture bar on satellite / Bridgeman Images

AVE6327898: 1960s: Girls smile / Bridgeman Images

AVE6327910: 1960s: Glass tube over Bunsen burner flame / Bridgeman Images

AVE6327916: America, c.1990s: Video from inside space shuttle Endeavour of satellite in orbit / Bridgeman Images

AVE6327919: 1960s: Girl adjusts glassware with clamp / Bridgeman Images

AVE6327922: 1960s: Hand lights Bunsen burner with match / Bridgeman Images

AVE6327937: 1960s: Hand moves test tube in and out of flame / Bridgeman Images

AVE6327943: 1960s: Girl turns off water faucet / Bridgeman Images

AVE6327967: United States, 1950s: Rocket on launch pad at night / Bridgeman Images

AVE6328012: United States, 1950s: Two children walk along the rubble from the destruction caused by the German V2 rocket / Bridgeman Images

AVE6328015: United States, 1950s: Soldiers land on a seashore as cannons fire at their target / Bridgeman Images

AVE6328018: United States, 1950s: One by one, American soldiers find their way to European seashores / Bridgeman Images

AVE6327461: 1950s: Chair of president's desk in Oval Office / Bridgeman Images

AVE6327497: United States, 1950s: man uses large key to open door / Bridgeman Images

AVE6327506: United States, 1950s: flames in iron mongers workshop / Bridgeman Images

AVE6327512: United States, 1950s: hands place paper over printing press block / Bridgeman Images

AVE6327527: United States, 1970s: animation of thorium 234 molecule / Bridgeman Images

AVE6327560: United States, 1970s: keep door closed sign inside mine / Bridgeman Images

AVE6327572: United States, 1970s: man in science lab / Bridgeman Images

AVE6327575: United States, 1970s: miner inspects ventilation shaft in mine / Bridgeman Images

AVE6327590: Puerto Rico, 1960s: Flowers in rainforest / Bridgeman Images

AVE6327617: United States, 1930s: A dog prepares to go to space with different tests / Bridgeman Images

AVE6327626: United States, 1930s: Men carry a small rocket and set it up in an isolated field / Bridgeman Images

AVE6327632: Germany, 1940s: Scientists build a rocket and weapons / Bridgeman Images

AVE6327647: United States, 1950s: Animation of satellite, dog superimposed in satellite / Bridgeman Images

AVE6327653: United States, 1950s: Views of rocket launch crew in control booth / Bridgeman Images

AVE6327671: United States, 1950s: Military officials inspect rockets / Bridgeman Images

AVE6327701: United States, 1950s: Dr. Goddard and his early rocket experiments / Bridgeman Images

AVE6327704: United States, 1950s: Reporters and newsmen arrive at a US base to witness the launching of a rocket / Bridgeman Images

AVE6327710: United States, 1950s: People in a metropolitan area do their activities of daily living / Bridgeman Images

AVE6327713: 1970s: Children walk along side of road / Bridgeman Images

AVE6327716: 1970s: Bus picks up children at bus stop / Bridgeman Images